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Genetic Diversity of Two Isolates in Strawberry mild yellow edge virus from Korea
Res. Plant Dis. 2018;24:285-291
Published online December 31, 2018
© 2018 The Korean Society of Plant Pathology.

Sun-Jung Kwon*, In-Sook Cho, Ju-Yeon Yoon, and Gug-Seoun Choi

Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea
*Tel: +82-63-238-6323 Fax: +82-63-238-6305 E-mail: sjkwon2448@korea.kr
Received October 14, 2018; Revised November 1, 2018; Accepted November 4, 2018.
cc This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Two isolates of Strawberry mild yellow edge virus were newly isolated in strawberry (Fragaria x ananassa) cultivar Selhyang and Kamhong from Korea. The complete nucleotide sequence of the coat protein (CP) of two Korean isolates were determined and analyzed. Sequence identity of nucleotide and amino acid between SH and KH isolates was 90.4% and 95.5%, respectively. The comparison of three Korean isolates including previously reported KNS1 with 45 SMYEV sequences from other countries deposited in GenBank database revealed an identity ranging from 81.2% to 100%. The phylogenetic analysis of CP of all SMYEV isolates showed the five subgroups (I-V), with Korean isolates being divided into two different subgroups. The isolates KH and KNS1 were included in subgroup I, whereas SH was included in subgroup IV which is new phylogenetic subgroup. Genetic diversity analysis indicated that new subgroup had greater variability and nucleotide diversity between subgroups resulted in values ranging from 0.0863 to 0.18004. This report represents the first molecular characterization of SMYEV isolates from Korea.
Keywords : Coat protein, Fragaria x ananassa, Genetic diverisity, Phylogenetic analysis, Strawberry mild yellow edge virus


December 2018, 24 (4)